Simulation of compaction and crushing of concrete in ballistic impact with a new damage model

Pereira, L.F. Magalhaes; Weerheijm, J.; Sluys, L.J.

doi:10.1016/j.ijimpeng.2017.09.014

Cited by 32 publications

(9 citation statements)

References 58 publications

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“…A number of experiments and numerical simulations have been carried out on the surface cracks of various target and the internal cracks of the thin target and the shallow penetration target. The surface of the target appears crater and radiation cracks (Frew et al, 2006;Lai et al, 2015); the thin targets that are not perforated appears tensile scabbing on their back (Li et al, 2005;Sovják et al, 2015); the perforated thin target appears shear plug (Pereira et al, 2018;Tai, 2009); and the shallow penetrated target appears spherical radiation cracks inward (Forquin et al, 2008;Forquin et al, 2015). The study of cracks in deep penetration target is mainly based on two-dimensional numerical simulation (Beissel and Johnson, 2000;Lian et al, 2010), but there are few experimental studies, and it is necessary to demonstrate the basic characteristics of cracks in deep penetration target via experimentation.…”

Section: Introductionmentioning

confidence: 99%

Study of cracks in concrete target under deep penetration by a projectile

Shen

et al. 2019

Lat. Am. j. solids struct.

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A large number of cracks occur in concrete structure after projectile penetration. The study of crack distribution and propagation process is the basis of damage assessment, structural repair and high dynamic fracture mechanism. In this paper, wire saw cutting, X-ray computed tomography (X-CT) and mechanical property testing of damaged concrete were carried out on deep penetration targets. According to X-CT images of radial core samples in target and the mechanical properties of damaged concrete, the crack distribution in the target was divided into a plastic damage zone and a brittle damage zone, and the microcracks only existed in the plastic damage zone. The initial growth process of three-dimensional cracks was obtained by X-CT images of axial core samples in target, that is, the cracks in the pure mortar target gradually developed from the radial direction to the tangential direction, and the target containing coarse aggregate directly formed tangential cracks. The propagation progress of cracks was obtained through the target section, that is, the tangential cracks bent in the pure mortar target, and were relatively straight in the target containing coarse aggregate. A crack propagation model was established, and the tangential crack formula and the crack propagation velocity were obtained.

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Section: Introductionmentioning

confidence: 99%

Study of cracks in concrete target under deep penetration by a projectile

Shen

et al. 2019

Lat. Am. j. solids struct.

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“…The experimental, theoretical and numerical study of the concrete behavior under dynamic load is proceeding vigorously. The work is carried out in several directions: development of simplified models based on the experimental investigation of various concrete types, which enable a rapid assessment of dynamic action on a structure; development of reinforced concrete models; development of algorithms for detailed numerical analysis and prediction calculations [2][3][4][5][6][7][8][9]. Pereira et al [2] proposed a concrete damage model, which takes into account the influence of hydrostatic compression on the concrete fracture under impact loads.…”

Section: Introductionmentioning

confidence: 99%

“…The work is carried out in several directions: development of simplified models based on the experimental investigation of various concrete types, which enable a rapid assessment of dynamic action on a structure; development of reinforced concrete models; development of algorithms for detailed numerical analysis and prediction calculations [2][3][4][5][6][7][8][9]. Pereira et al [2] proposed a concrete damage model, which takes into account the influence of hydrostatic compression on the concrete fracture under impact loads. The numerical comparison in an axisymmetric formulation was made of fracture dynamics of concrete targets under normal impact of the rigid and elastoplastic projectile in the range of initial velocities 200-500 m/s.…”

Section: Introductionmentioning

confidence: 99%

Fracture of Protective Structures from Heavy Reinforcing Cement During Interaction with High-velocity Impactor

Radchenko¹,

Батуев²,

Радченко³

2021

J. Sib. Fed. Univ., Math. phys.

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In this work, the fracture of a reinforced concrete barrier made of heavy reinforced ce- ment is numerically simulated during normal interaction with a high-velocity titanium projectile. The projectile has the initial velocity 750 m/s. The problem of impact interaction is numerically solved by the finite element method in a three-dimensional formulation within a phenomenological framework of solid mechanics. Numerical modeling is carried out using an original EFES 2.0 software, which al- lows a straightforward parallelization of the numerical algorithm. Fracture of concrete is described by the Johnson-Holmquist model that includes the strain rate dependence of the compressive and tensile strengths of concrete. The computational algorithm takes into account the formation of discontinuities in the material and the fragmentation of bodies with the formation of new contact and free surfaces. The behavior of the projectile material is described by an elastoplastic medium. The limiting value of the plastic strain intensity is taken as a local fracture criterion for the projectile material. A detailed numerical analysis was performed to study the stress and strain dynamics of the reinforced concrete target and the effect of shock-wave processes on its fracture. The influence of reinforcement on the resistance of a heavy cement target to the penetration of a projectile has been investigated

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“…Numerical modelling approaches for evaluating the detailed nonlinear response of concrete structures subjected to impact loading are commonly based on the finite element method, which is used to model concrete and steel reinforcement as interacting phases. For concrete, models for cracking and crushing are commonly based on plasticity [37,38], damage mechanics [39,40], or combinations of these two [41][42][43][44][45]. Alternative approaches include micro-plane based models [46,47] and discrete methods [48,49].…”

Section: Introductionmentioning

confidence: 99%

On the dynamic response of reinforced concrete beams subjected to drop weight impact

Leppänen

Johansson

Grassl

2020

Finite Elements in Analysis and Design

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To improve the impact resistance of reinforced concrete structures, a detailed understanding of the dynamic response is required. This study investigates this impact resistance using experiments in combination with 3D non-linear finite element (FE) simulations. The experiments made use of high-speed photography and digital image correlation (DIC), while a damage-plasticity constitutive model for concrete was used in the FE simulations. Drop weight impact tests of simply supported reinforced beams made of plain concrete and fibre reinforced concrete were made, and it was shown that the addition of fibres reduced crack spacing, crack widths and mid-point deflections. For the FE approach, tetrahedral elements were shown to be well suited for capturing inclined shear cracks and the structural response obtained in experiments and analyses agreed very well. The FE analyses showed that the reinforcement strains were more localised for concrete with fibres, and hence predicted an increased risk of reinforcement rupture.

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Simulation of compaction and crushing of concrete in ballistic impact with a new damage model

Cited by 32 publications

References 58 publications

Study of cracks in concrete target under deep penetration by a projectile

Study of cracks in concrete target under deep penetration by a projectile

Fracture of Protective Structures from Heavy Reinforcing Cement During Interaction with High-velocity Impactor

On the dynamic response of reinforced concrete beams subjected to drop weight impact

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